邻苯二胺对铜在红壤和砂姜黑土中吸附和解吸的影响
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*中国科学院南京土壤研究所所长基金;中国科学院创新方向课题(KZCX2-401);国家重点基础研究发展规划项目课题“区域土壤复合污染、形成机制及其生态效应”(2002CB410808)资助


EFFECTS OF O-PHENYLENEDIAMINE ON ADSORPTION AND DESORPTION OF COPPER IONS IN RED SOIL AND SAJONG BLACK SOIL
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    摘要:

    研究了铜在红壤和砂姜黑土中的吸附和解吸过程以及有机污染物邻苯二胺对铜在两种土壤中吸附和解吸行为的影响.结果表明,砂姜黑土较红壤对铜具有更高的吸附量,同时,被吸附的铜离子从土壤中的脱附百分数也是砂姜黑土大于红壤,吸附在砂姜黑土中的铜较红壤更易被1molL-1MgCl2所置换.pH3.5~7.5范围内,土壤对铜的吸附量均随溶液pH的升高而升高,呈现S形.邻苯二胺增加了红壤对铜的吸附量,同时也增加了铜的脱附百分数.而邻苯二胺虽未改变砂姜黑土对铜的吸附量,但却显著改变了铜的脱附百分数.文中对邻苯二胺与铜的交互作用过程及其机理进行了推测.

    Abstract:

    Study of Cu adsorption and desorption processes on Red soil(R) and Sajong black soil(SB) is carried out.The results exhibit that SB has higher Cu adsorption quantity than R,and Cu desorption percentage from SB is also higher than that from R.It means that Cu is more easily exchanged by MgCl2 from IB than from R.In the pH range from 3.5 to 7.5,Cu adsorption in the two soils increases with increasing pH,and shows as of S-shape.Effect of o-Phenylenediamine(o-PD) on Cu adsorption and desorption in the two soils shows that presence of o-PD increases Cu adsorption in R but not changes it obviously in SB, meanwhile,Cu desorption percentage increased correspondingly.Although o-PD does not change Cu adsorption quantity in SB,it changes Cu adsorption process strongly,which can be recognized from Cu desorption percentage from SB.

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王慎强,周东美,王玉军,陈怀满,郑春荣.邻苯二胺对铜在红壤和砂姜黑土中吸附和解吸的影响[J].土壤学报,2003,40(4):567-573. DOI:10.11766/trxb200110280413 Wang Shen-qiang, Zhou Dong-mei, Wang Yu-jun, Chen Huai-man, Zheng Chun-rong. EFFECTS OF O-PHENYLENEDIAMINE ON ADSORPTION AND DESORPTION OF COPPER IONS IN RED SOIL AND SAJONG BLACK SOIL[J]. Acta Pedologica Sinica,2003,40(4):567-573.

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  • 收稿日期:2001-10-28
  • 最后修改日期:2002-12-25
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  • 在线发布日期: 2013-02-25
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